Experts recommend that users should spend around 10 per cent of their bike's value on a decent lock - ideally two - and always lock it to a solid object through the frame.
2
自行车的车架、车轮、车把和车座都用以此方式制造的纸板制成，然后组装在一起。
Thee bike's frame, wheels, handlebars and saddle are all made of cardboard in this way, and then fitted together.
3
起重小车又由起升机构、小车运行机构和小车架三部分组成。
Lifting it from the lift car bodies, car run institutions and small frame of three parts.
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